A building contains 20 rooms in total. 9 of the rooms are on the ground floor.
7 of the rooms have white walls.
2 of the rooms that are on the ground floor also
have white walls.
Work out the probability that a room picked at
random is neither on the ground floor nor has white
walls.
Give your answer as a fraction in its simplest form.

529 and 531

step-by-step explanation:

hi there!

the answer will be d: 2

an

y = 6x -3y -12

y +3y +12 = 6x

=> . x = { 2y / 3 +2 } this is equation of line in terms of x

=> . if line meets the x-axis the co-ordinates of meeting point would be ( x , 0 )

=> . x = 2 ( 0 ) / 3 + 2

=> . x = 2

so, the point is ( 2 , 0 )

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step-by-step explanation: